C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

wipers are working...thats the problem

Thread Tools
 
Search this Thread
 
Old Aug 10, 2009 | 08:32 PM
  #41  
Willcox Corvette's Avatar
0Willcox Corvette
Former Vendor
 
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Default

Helping you is not a problem. . . All the wiper problems this week are mixing together.

Your question about 10 and 11. Yellow 10 is hot all the time with the key on and the blue 11 is the ground from the switch for the relay. If the relay is smoked this might be what is putting power to the blue wire on you.

Willcox
Reply
Old Aug 11, 2009 | 09:30 AM
  #42  
ace_cobra's Avatar
ace_cobra
Thread Starter
Racer
10 Year Member
 
Joined: Apr 2007
Posts: 357
Likes: 0
From: Porters Lake Nova Scotia
Default

if i pulled the blue wire off, and seperately ran a jumper from the terminal to gorund, would it fry the motor. Is there any way to test the relay without taking it out of the car
Reply
Old Aug 11, 2009 | 09:45 AM
  #43  
Willcox Corvette's Avatar
0Willcox Corvette
Former Vendor
 
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Default

Ace,

What kind of voltage do you have on the blue wire?

Willcox
Reply
Old Aug 11, 2009 | 05:37 PM
  #44  
Willcox Corvette's Avatar
0Willcox Corvette
Former Vendor
 
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Default

Ace,

Today I put power on the blue wire to see what would happen. The wires started smoking on my test machine! (12 volts.)

With the key off you should not have any power on the lt blue wire. I tried it both ways. Nothing I did made the motor run all the time. Did you remove the pump and see if the switch is stuck?

Willcox
Reply
Old Aug 12, 2009 | 06:46 AM
  #45  
ace_cobra's Avatar
ace_cobra
Thread Starter
Racer
10 Year Member
 
Joined: Apr 2007
Posts: 357
Likes: 0
From: Porters Lake Nova Scotia
Default

im going to be doing the voltage test tonight, I have tested the switch individually, it works fine according to my continuity check. It seems the only thing that can give that blue wire power is the relay.
Reply
Old Aug 12, 2009 | 04:31 PM
  #46  
...Roger...'s Avatar
...Roger...
Race Director
 
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Default

Ace I'm not sure how you are testing the voltage on the blue wire BUT if you are using a test light between ground and the blue wire AND the blue wire is SEEKING ground your test light will light.
Also-Its possible but I haven't actually done it on this circuit that if you are reading the voltage with a voltmeter even with the blue wire connected that the voltmeter will read voltage on the blue ground side wire.
Did that make sense.....heck no, so lets do something else because with this setup you have I don't think reading voltages on the grounding side of the solenoid and relay will tell us much. You just want the dang thing to work.

At this point the way I read what the problem is is that the wipers work perfectly on all speeds but they will not park and shut off .
If this is correct after you take the voltage reading that you were going to do perform a little test for me if you dont mind.
Start the car and use the vacuum pulldown switch to keep the wiper door in the up position. Pull the yellow/blue wire connector off the solenoid and see if the wiper will now park and shut off. If that doesnt do it pull the yellow/blue wire connector off the relay and see if that allow the wiper to park. Let us know.
( you did decide that the "no park" condition that Ernie was talking about is not pawl related didnt you ?)
Reply
Old Aug 12, 2009 | 04:39 PM
  #47  
ace_cobra's Avatar
ace_cobra
Thread Starter
Racer
10 Year Member
 
Joined: Apr 2007
Posts: 357
Likes: 0
From: Porters Lake Nova Scotia
Default

no i havent had a chance to take the motor apart again, i have been busy with work. The wipers onyl function on intermediate, they wont change to hi speed, and as soon as the door opens the wiprs go.
Reply
Old Aug 12, 2009 | 05:31 PM
  #48  
...Roger...'s Avatar
...Roger...
Race Director
 
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Default

Originally Posted by ace_cobra
right now the wipers work perfectly, hi,low off then park, but the main red/white wire isnt even connected?
Can you put everything back the way it was to get us back to here ?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Aug 12, 2009 | 09:12 PM
  #49  
ace_cobra's Avatar
ace_cobra
Thread Starter
Racer
10 Year Member
 
Joined: Apr 2007
Posts: 357
Likes: 0
From: Porters Lake Nova Scotia
Default

all i changed was the red/white wire going to the yellow wire. I also have .36 volts on the blue wire at the connector to the motor...
Reply
Old Aug 13, 2009 | 12:34 PM
  #50  
ace_cobra's Avatar
ace_cobra
Thread Starter
Racer
10 Year Member
 
Joined: Apr 2007
Posts: 357
Likes: 0
From: Porters Lake Nova Scotia
Default

when i get a chance again maybe i will try to put it all back but all i did was take the yellow wire, cut it and then had the red wire run through the yellow wire?
Reply
Old Aug 13, 2009 | 01:40 PM
  #51  
...Roger...'s Avatar
...Roger...
Race Director
 
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Default

Originally Posted by ace_cobra
hi there, i have a 1970 350 and my problem is, axactly as the title says. I have the wiper override switch unplugged, and the main power to the motor is unplugged, and the wipers still work. I dont understand how the wiper motor is getting power. With the key on, the wiper switch is getting power on the dbl and 2 lbl wires, but not the black that goes to the relay. This is causing the wiper solenoid to be energized on both terminals when the switch is off, and only the yellow terminal when the switch is on. I have tried to follow the schematic, but i am no doctor. Please help, i dont understand why the wiper motor is working???
Originally Posted by ace_cobra
right now the wipers work perfectly, hi,low off then park, but the main red/white wire isnt even connected?
I'm going back and trying to understand what you meant in your OP.

#1 I thought you meant you were surprised that your wipers would still work perfectly even though the power leads were disconnected from the wiper motor.

#2 Maybe you meant the wipers worked perfectly but would not park and shut off even though the power was disconnected.
Reply
Old Aug 13, 2009 | 01:46 PM
  #52  
...Roger...'s Avatar
...Roger...
Race Director
 
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Default

Originally Posted by ace_cobra
when i get a chance again maybe i will try to put it all back but all i did was take the yellow wire, cut it and then had the red wire run through the yellow wire?


So the yellow wire spade (center spade) in the wiper motor is fed by the red/white wire coming from the limit switch ? Which side of the limit switch is the wire that your using ? One side is hot 24/7 and the other side is only hot when the wiper door is in the up position.

Was the yellow before you cut it hot when the key was on and cold when the key was off ?
Reply
Old Aug 13, 2009 | 07:14 PM
  #53  
ace_cobra's Avatar
ace_cobra
Thread Starter
Racer
10 Year Member
 
Joined: Apr 2007
Posts: 357
Likes: 0
From: Porters Lake Nova Scotia
Default

ok when i originally started this post, my problem was that my red/white wasnt connected and the wipers worked fine. Then i found out that the motor isnt for a 68-72, do i cut the yellow wire going to the power, and ran the red/white wire to my main power(yellow) input for the motor connector. Then i adjusted the wipers and as i was doing that, they just started to run, with my hands in the area tightening the nuts. Now the wipers will turn on when the door opens(becuase the limit switch is completed) and the wipers run on INTERMEDIATE SPEED ONLY. No input from the switch seems to make a difference. Could the motor be grounding internally, because it started doing it when i was placing the connecting rod onto the back pawl on the wiper motor.
Reply
Old Aug 13, 2009 | 08:14 PM
  #54  
...Roger...'s Avatar
...Roger...
Race Director
 
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Default

I doubt that its an internal ground. When you put the lever on you probably moved the motor out of park and the motor then needed to cycle a full turn to get back to park.
At this point I think you should remove all the wires from the motor including the ground so we can separate the car wiring from the wiper.
Put the wiper door in the up position and remove the small vacuum hose from the wiper vacuum relay.
Attach a new separate ground wire from the engine to the wiper motor.
Now using the Willcox bench test procedure run the motor through its paces so we can confirm it is mechanically OK.
Run a hot lead to the center terminal . ( where the yellow was )
Now ground the terminal that the lt blue wire was on. wiper should run on high
Remove the ground from the lt blue terminal and see if the wipers park
Now reattach the ground to the lt blue terminal-(wipers on high)
Now jumper a wire from the green wire terminal to the lt blue terminal and the wipers should go down to low speed
If all this works correctly then the wiper motor is OK and we have to move to the car wiring.
Reply
Old Aug 13, 2009 | 08:52 PM
  #55  
Willcox Corvette's Avatar
0Willcox Corvette
Former Vendor
 
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Default

Ace,

Did you ever get a chance to pull the washer pump off the car and see if the park was pawl was stuck? The only reason I kept going back to this is the constant speeed of the motor now. When the motor is trying to park, it will only run at one speed. . .

I would still follow Rogers suggestions first. This will rule out the motor as the cause or tell you if the motor is the problem.

W
Reply
Old Aug 14, 2009 | 06:34 AM
  #56  
ace_cobra's Avatar
ace_cobra
Thread Starter
Racer
10 Year Member
 
Joined: Apr 2007
Posts: 357
Likes: 0
From: Porters Lake Nova Scotia
Default

Originally Posted by ace_cobra
I have already done the test that you have on the website, to test a 68-72 wiper motor. The motor ran as it should, hi when there is 12v and lbl is grounded, then low when green is jumped with lt blue. I have constant power going to the middle yellow wire, all the time. When the key is on and the switch is off, the only power i have is on the light blue wire, and the yellow wire. When the switch is on low, high or pump, i lose power on the light blue wire
i have done this test and the motor worked. I will get a chance to look at the motor this weekend hopefully, and see if it is allowing it to park.
Reply
Old Aug 14, 2009 | 07:44 AM
  #57  
...Roger...'s Avatar
...Roger...
Race Director
 
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Default

Originally Posted by ace_cobra
i have done this test and the motor worked. I will get a chance to look at the motor this weekend hopefully, and see if it is allowing it to park.
Ace let me add one more step.
At any point while the motor is running remove the hot lead going to the center terminal to confirm that it will stop using this terminal.
Reply
Old Aug 15, 2009 | 10:42 AM
  #58  
ace_cobra's Avatar
ace_cobra
Thread Starter
Racer
10 Year Member
 
Joined: Apr 2007
Posts: 357
Likes: 0
From: Porters Lake Nova Scotia
Default

hey guys, sorry i havent been able to work on the car for a bit, i have been busy, and i have a couple car shows to attend to so i dont have time to take the cover off the motor this weekend, im hoping during this week i will get time to work on it. Is there any way i can isolate the relay to see if it is the problem. I dont think it is an internal ground either now that i think about it, because the motor ran fine when i tested it using the willcox website.
Reply
Old Aug 15, 2009 | 11:36 AM
  #59  
...Roger...'s Avatar
...Roger...
Race Director
 
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Default

Check the 2nd paragraph of my #46 post , I believe this will isolate the relay.
Reply




All times are GMT -4. The time now is 08:31 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE